Pulverizer



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H. S. ALBRECHT.

PULVERIZER. No. 604,283. Patented May 17,1898.

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H. S. ALBRECHT.

PULVERIZER.

No. 604,283. Patented May 17,1898.

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PULVERIZEB.

Patented May 17,1898.

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H. S. ALBRECHT.

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UNITED STATES PATENT OFFICE.

HERMAN S. ALBRECHT, OF ST. LOUIS, MISSOURI.

PULVERIZER.

SPECIFICATION forming et of Letters Patent No.oo4,2se, dated May 17,1898. Application filed May 3, 1897. fieriltlNo. 634,894. (No model.)

a citizen of the United States, residing in-the city of St. Louis, inthe State of Missouri, have invented a certain new and useful Improvement in Pulverizers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification.

My present invention relates to certain improvements in the class ofmachine set forth in my PatentNo. 571,588, issued November 17, 1896, andis designed for pulverizing or breaking ore, stone, clay, shale, and thelike and for mixing paints and other substances. 7

My present invention consists in features of novelty hereinafter fullydescribed, and pointed out in the claims.

Figure I is a top or plan View of my improved machine with part of thecasing or housing removed. Fig. 11 is a detail bottom view of Fig. IIIis a vertical section taken on line III III, Fig. I. Fig. IV is avertical section taken on line IV IV, Fig. III. Fig. V is aside view ofone of the bars that form the screen of the machine. Fig. VI isanenlarged detail View of one of the bar-supportin g plates, showing thebarsin section. Fig. VII is a section taken on line VII VII, Fig. VI.Fig. VIII is a section taken on line VIII VIII,Fig.VI. Fig. IX is a sideelevation showing my invention in the form of a double machine. Fig. Xis an enlarged detail View showing the shaft and one of the spiderssecured thereto. Fig. XI is a detail side view of the shaft with two ofthe spiders in place.

Referring to the drawings, 1 represents a case or housing, preferablymade of two parts provided with meeting flanges 2, secured together bybolts 3.

4 represents a shaft journaled in the housing by means of boxes 5. Thisshaft is provided with a driving-pulley 6 and a fly-Wheel 7. The housingis provided with an opening or mouth 8, through which the material to beacted upon is introduced, and in the lower part of the housing there isa screen composed of a number of bars 9, fitting in notches 10, formedin plates 11, that are preferably made in sections, as shown in Figs.III and VI. There is a plate 11 on each side of the ma chine. Theseplates fit in grooves 12, formed in the inner faces of the sides of thehousing,

.as shown in Fig. IV, and when they are insert-ed they are held inposition by the bars ,9, a sufficient number of the bars having notches13, the ends 1i of these bars fitting in notches 10, which are of lessdepth than the other notches in the plates,thereby permitting a portion15 (see Fig. VII) of these bars to extend down and bear against thesides of the plates, thus holding the plates in position in a cheap andeffective manner. By taking off the top half of the housing and removingthe bars the plates 11 maybe taken out by moving them in the grooves 12,and thus the plates and bars may readily be renewed when necessary.

17 represents hardened-metal rings fitting in grooves 18, made in theinner face of the sides of the housing inside of the grooves 12 and ofless width than the grooves 12. The function of these rings is to act aswear-plates to protect the housing from wear at the points of greatestabrasion between the material being acted upon and the housing. Theserings may readily be renewed as they become worn out, and experience hasdemonstrated that their use adds materially to the life of the machine,as the frame or housing in the ab sence of these rings is rapidly wornaway by the material being acted upon,and when worn away the machinebecomes useless. By making the grooves 12 of greater depth than thegrooves 18 the bars 9 will be retained in place even should the rings 17become worn out as a whole or in places before they are renewed. Therings 17 may be held in place by bolts 19 or by other suitable means.

Secured to the shaft 4 are a number of spiders, each spider consistingof a hub 20, having a pair of radial arms 21 in line in one verticalplane and a pair of radial arms 22 in line in another vertical plane andarranged at right angles to the other arms. (See Figs. X and XI.)

23 represents hammers in the form of fiat strips of metal, these hammersbeing secured to the arms of the spiders bymeans of bolts 24:, thatextend entirely through the arms of the spiders, as shown in Fig. IV,the spiders being adjusted on the shaft so that their respective armswill register, thus allowing one bolt to be employed for connecting allofthe hammers of each set of the arms to said arms. Thearms 21 of eachspider are in line and the arms 22 of the same spider are in line; butthe arms 21 are out of line with the arms 22, as shown in Fig. XI, theobject of this construction being to permit the hammers of each pair ofarms of each spider being set out of line With the other pair of hammersof each spider, thus spreading the entire hammersurface of all thespiders of the machine entirely across the cylinder instead of havingspaces between the hammers of the different spiders, as would be thecase if all of the arms of each spider were formed in line.

Each side of the housing or casing is formed with a hole 25, that may beclosed by a cover 26. (See Fig. IX.) These holes are located the properdistance from the shaft 4 to bring them opposite the bolts 24 when thecylinder (consisting of the spiders and hammers) is turned to the properposition, and then when it is necessary to renew the hammers the boltsmay be withdrawn through the holes 25 and the hammers thus renewed byintroducing new hammers through the opening or mouth 8 of the housingwithout taking the casing of the machine apart. WVhen the upper half ofthe casing is formed in sections, as shown at the left of Fig. IX, theholes 25 would preferably be formed to one side of a vertical linethrough the shaft 4; but when the upper half of the housing or casing isformed in a single piece, as shown to the right of Fig. IX, the

holes 25 would preferably be formed on a verv tical line with the'shaft4E.

27 represents steam-coils arrangedwithin the housing at suitable points,these being protected by linings 28. The object of these coils is to dryor heat the material being treated when such drying or heating isnecessary.

In Fig. IX, I have shown the machine of double form, as in my patentreferred to, no further description of this, either as to theconstruction or operation of the machine, being here necessary, exceptto state that when the machine is made double the screen-surface wouldbe arranged in a horizontal manner, as shown in Fig. IX, instead of in acircular manner, as shown in Fig. III. The

plates 11 may be taken out in this form of the machine by removing therear section 1 of the housing.

I claim as my invention 1. A pulverizer comprising a housing havinggrooves in the inner faces of the side walls thereof, a revolvingcylinder, sectional removable side plates having notches and fitting inthe grooves, and the bars having their ends fitting in the notches ofthe side plates and providing a screen; substantially as described.

2. A pulverizer comprising a housing having grooves in the inner facesof the s1de walls thereof, a revolving cylinder, sectional removableside plates having notches of different depths and fitting in thegrooves, the bars fitting in the deepest notches, and the bars havingnotched ends fitting in the notches of less depth to hold the sideplates in position independent of. other fastenings; substantially asdescribed.

3. A pulverizer comprising a housing having inner and outer grooves inthe inner faces of the side walls thereof, a revolving cylinder,sectional removable side plates having notches and fitting in the outergrooves, the bars having their ends fitting in the notches of the sideplates, and providing a screen, and the wear-plates fitting in the innergrooves;

substantially as described.

4. A pulverizer comprising a housing having side walls formed with anouter groove, and an inner groove of less depth than the outer groove, arevolving cylinder, sectional removable side plates having notches andfitting in the outer grooves, the bars having their ends fitting in thenotches of the side plates and providing a screen, and the Wearplatesfitting in the inner grooves; substantially as described.

5. A pulverizer consisting of a housing, a revolving cylinder, and ascreen; said cylinder being composed of a shaft, a number of spiderseach having two pairs of arms, and hammers pivoted to the arms of thespiders; one pair of arms of each spider being located to one side ofthe other pair of arms of said spider, substantially as set forth.

HERMAN S. ALBRECHT.

In presence of- E. S. KNIGHT, STANLEY STONER.

